Cisco WAN :: 800 Router - Permit Some IP To Connect Over Port 3389?
Apr 22, 2011
Below is my show run of a Cisco 800 router (Two VLAN's, single WAN) that works fine. Problem is that in this senario port 3389 is open for everyone. Only two remote users are allowed to connect trough port 3389. Let's say WAN IP's : 22.33.44.55 and 66.77.88.99. How would a good access-rule look like to fix it?
no service padservice tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msecservice timestamps log datetime msecservice password-encryptionservice sequence-numbers!hostname cisco-867!boot-start-markerboot-end-marker!logging buffered 51200logging console criticalenable secret 5 ***!no aaa new-modelmemory-size iomem 10clock timezone GMT 1clock summer-time GMT date Mar 30 2002 1:00 Oct 26 2035 1:59!!no ip source-route!!ip dhcp excluded-address 192.168.10.200 192.168.10.254!ip dhcp pool Vlan2 network 192.168.10.0 255.255.255.0 domain-name dsl.local default-router 192.168.10.254 dns-server 213.144.235.1 213.144.235.2 lease 0 8!!ip cefno ip bootp serverno ip domain lookup!!!archive log config
[Code]....
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Nov 3, 2011
At one of our client premises they have an Cisco 1841 router. We need to connect from outside (other location in another country) with Remote Desktop connection port 3389 to an internal IP address ( a server).From any IP address it have to permit a connection on port 3389 to be forwarded to the server.
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May 6, 2012
I would like to setup an cisco ASA 5505 to only allow certain IP's on port 3389, but i can't get it to work. Maybe some of you experts know why?
Here is my config:
ASA Version 8.4(3)!hostname cisco-asaenable password ** encryptedpasswd ** encryptednames!interface Ethernet0/0switchport access vlan 2!interface Ethernet0/1!interface Ethernet0/2!interface Ethernet0/3!interface Ethernet0/4!interface Ethernet0/5!interface Ethernet0/6!interface Ethernet0/7!interface Vlan1nameif insidesecurity-level 100ip address 192.168.1.253 255.255.255.0!interface Vlan2nameif outsidesecurity-level 0ip address 95.*.*.* 255.255.255.248!ftp mode passiveobject network obj_anysubnet 0.0.0.0 0.0.0.0object network rdpuser-1host 46.*.*.*object network rdpuser-2host 48.*.*.*object network rdp-host-pchost 192.168.1.20object
[code].....
The allowed IP's are setup on user level (rdpuser-1 and rdpuser-2) .Still do, I can't connect to the server from any of these IP's...
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May 15, 2011
we are not able to access port 3389 on host 10.45.4.2 over our vpn connection. vpn is up and running and we can access othet tcp ports on the host but not 3389. hereunder part of the config:
ip http serverno ip http secure-serverip nat inside source route-map SDM_RMAP_1 interface BVI1 overloadip nat inside source static tcp 10.45.4.2 18330 94.229.51.184 18330 route-map SDM_RMAP_2 extendableip nat inside source static tcp 10.45.4.1 3389 213.148.231.156 3389 extendableip nat inside source static tcp 10.45.4.1 5800 213.148.231.156 5800 extendableip nat inside source static tcp 10.45.4.1 5900 213.148.231.156 5900 extendable!access-list 1 remark SDM_ACL Category=16access-list 1 permit 10.45.4.0 0.0.0.255access-list 100 remark SDM_ACL Category=4access-list 100 remark IPSec Ruleaccess-list 100 permit ip 10.45.4.0 0.0.0.255 10.45.1.0 0.0.0.255access-list 101 remark SDM_ACL Category=2access-list 101 remark IPSec Ruleaccess-list 101 deny ip 10.45.4.0 0.0.0.255 10.45.1.0 0.0.0.255access-list 101 permit ip 10.45.4.0 0.0.0.255 anyaccess-list 102 deny ip host 10.45.4.2 10.45.1.0 0.0.0.255access-list 102 permit ip host 10.45.4.2 anyroute-map SDM_RMAP_1 permit 1 match ip address 101!route-map SDM_RMAP_2 permit 1 match ip address 102!!control-plane!bridge 1 protocol ieeebridge 1 route ip
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Jul 12, 2011
RDP (port 3389) is not working on D-Link network - is there a setting in the d-link to allow this?
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Jun 3, 2012
In Cisco ASA 5510 , outlook port only permit ( pop3 995/smtp :587) with TLS encryption. How we can do it thru ASDM .
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Jan 24, 2012
I need to permit the connection from outside to inside in a 2911 Cisco router, only from an Public IP Address (suppose 1.1.1.1) to some local private IPs.
I have one question:
Using the command:
ip nat inside source static tcp <local ip> <port> <global ip> <port>
The "global IP" can be the Public IP from where the connection starts (in this case 1.1.1.1)? or it must be the Public IP assigned the the Router interface connected to the Public Network.
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Jun 3, 2012
192.168.1.10 --> ASA 1-----> ASA 2-------> ASA 3----> server (172.21.16.15)
We have opened 3389 , 80 & 445 ports on all firewalls ( ASA 1, ASA 2, ASA ) for server (172.21.16.15) from (192.168.1.10).We are able to see connection in ASA 1 under show connection for 3389, 445 ,80.
We are not able to see connections in ASA 2 & ASA 3 under show connection for 3389. But we are able to see hits in ACl.
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Mar 5, 2012
I have a PC attached to a standard 192.168.1.1 router with port forwarding turned on. The PC has an IP of 192.168.1.10 and I have Port 3389 (RDP) on the router forwarded to that PC's internal IP.
I currently have a DynDNS hostname, example.dyndns.org, and I type that into MSTSC (remote desktop) whenever I'm traveling.
But, is there a better way of doing this? The IP of the PC is not static, but it rarely changes. I do have a domain registered with GoDaddy and have full access to DNS records.
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Mar 9, 2012
I'm trying to get my ASA 5505 (IOS 8.4) to work, but got stuck on NAT because I would like to allow 3389 access for just a couple of WAN IP's. This is what I found so far:
(config)# object network Internal_RDS(config-network-object)# host 192.168.1.10
(config-network-object)# nat (inside,outside) static interface service tcp 3389 3389(config-network-object)# exit
(config)# access-list inbound permit tcp any object Internal_RDS eq 3389
(config)# access-group inbound in interface outside
But this will allow all WAN IPs to access 192.168.1.10 over port 3389 I guess? I would like to allow only some WAN IP's
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Jan 22, 2013
I Have this Topology: R1 is as server and i want to public that server in INTERNET using public IP 7.7.7.7, but i can not do that. I tried to do a NAT but it just translate from DMZ to Outside, however i can not to ping to 7.7.7.7 from Outside (R2).
I have a route in R2
7.7.7.7 [1/0] via 200.200.200.1
On R2 i can´t ping to 7.7.7.7
On R2 i can´t ping to 172.16.0.2
On R1 i can ping to 200.200.200.2
On Inside i can ping to 172.16.0.2
when i try to ping from DMZ to Outside (200.200.200.2) the debug, and show nat details, show me:
ciscoasa(config)# nat: translation - dmz:172.16.0.2/26 to outside:7.7.7.7/26
nat: untranslation - outside:7.7.7.7/26 to dmz:172.16.0.2/26
nat: untranslation - outside:7.7.7.7/26 to dmz:172.16.0.2/26
nat: untranslation - outside:7.7.7.7/26 to dmz:172.16.0.2/26
ciscoasa(config)#
ciscoasa(config)# sh nat detail
[code]...
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Aug 3, 2011
So from a security standpoint... PPTP through Windows RRAS then RDP to the server?,Open port 3389 to the server and rdp direct? would think that having a VPN out front would block people from attempting a connection, but if the VPN username and RDP username are the same, I feel like its about the same.
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Jul 29, 2011
I have a current issue with my 2008 R2 machine.I cannot get Remote Desktop to work. Client machine is Windows 7 Ultimate, windows firewall on the Server machine is disabled, Telnet to port 3389 works (as in, it doesn't error out it gives me a blank screen), the account I'm trying to login to is the only account on the machine (Administrator). Remote Desktop service is installed and set to allow connections on the less secure mode.
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Apr 18, 2011
I would like to know how can we allow traffic on ports 3389 (rdp) and 8007 which comes from any to 192.168.2.10 but pretend to be a Phones interface 192.168.2.1? [code]
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Aug 19, 2012
I have an RDP server farm that lost a disk. The RDP service was still running but users were unable to log in. I'd like to create a health probe that does maybe a combination of TCP probe for port 3389 and something that can determine if the drive that stores user profiles is available.
I cannot add any new service (http or ftp) to the server. Is there any way I can check SNMP mibs on the windows server or maybe WMI through TCL?
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Feb 27, 2013
I'm familiar with snmp-server views and excluding certain mib's, but is it possible to permit an snmp host to poll just one interface and nothing else on the router?
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Dec 9, 2012
I'm trying to determine whether Cisco has any equivalent (in any platform) to some of the existing firewall rules within our iptables infrastructure. [code] What this does, is allow port forwards on port 3389/rdp. However, if a single IP opens too many connections within a timeframe, it starts dropping new ones.This is a critical requirements for certain security scenarios, such as preventing RDP brute forcing. A similar principle can be applied to 22/ssh.I've had a look around, rate limiting searches generally land me on QoS based discussions. I've seen people ask similar questions and get referred to CBAC. Whilst I can see similarly worded functions there such as limiting "half open" connections, I don't see anything there that limits the actual number of connection attempts you can make.
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Feb 12, 2013
I need config mi own Cisco Router 2600 and permit to External Internet my Samsung DVR SDE-4001
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Feb 16, 2011
I'm new to this forum and Cisco in general but I feel it may be very resourceful to me as I am a new network administrator fresh out of school for a local credit unionHere's my situation:We need to limit access to one of our servers to only 3 workstations used by our IT department. The server is on a Cisco 3560G on port 17, which is the interface I'm trying to apply a standard, basic ACL to, which looks like this:
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Apr 6, 2011
I can not seem to view my "permit" entries in the log on my ASA 5520. I set up logging-lists, changed the level to 3 on the logging statement, and simply can't find it anywhere.
Partial config:
logging enabled
logging timestamp
logging JC-L3 level errors
logging monitor JC-L3
logging buffered JC-L3
logging trap notifications
[code]....
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Aug 9, 2011
I have an application behind an ASA 5505 that needs to access a mysql database over the Internet. How do IO configure the ASA to allow this remote mysql connection?
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May 12, 2013
I have configured a Cisco ASA 5505 to allow VPN access from outside to my LAN using Cisco VPN Client software. The connection is establishing properly with the ip address from my VPNPool. From outside (on VPN connection) I can ping the interface e0/0 (outside) and the interface e0/1 (inside) of the firewall, but I cannot ping the layer 3 switch interface to which the ASA is connected ( int gi1/0/22 ip address 192.168.1.2/30 ) and I cannot ping any vlan interfaces inside my switch. Therefore, I cannot connect to any server on my internal LAN. I am available at any time if further information is needed. find attached my ASA config.
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Jun 4, 2013
I've enabled RDP on a laptop, but I can't connect to it. Pinging the laptop works. nmap shows ports open, but not RDP. netstat on the laptop shows nothing listening on 3389. I've also tried rebooting. [code]
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Aug 21, 2011
It's been a while since I've done a lot with a PIX config so what is the best way to allow access for 2 IP addresses that need to RDP into a server here inside our network. They also wanted to have ports redirected, 3391 to 3389 and 3397 to 3389.
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Apr 9, 2012
setting up an ACL on my ASA 5510 to permit access only to the Nat subnet from inside to the outside interface. This firewall is setup for the DR solution in the production network. I am applying following acl in the inbound direction on the inside interface.
permit ip any "Nat_subnet"
After appliying this acl to inside interface I observed that I can ping to the destinations in NAT'ed subnet but unable to ssh to the servers. Following is the summary of my configuration.
!
interface Ethernet0/0
nameif outside
security-level 0
ip address 192.168.135.241 255.255.255.248 standby 192.168.135.242
[code].....
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Mar 3, 2011
I have everything working on a new 5.2 ACS but:I can only make a command set that permits things and denies all.I thought with the check box. Permit any command that is not in the table below" one could allow all and specifically deny commands.and that would allow the user to do all commands except for conf and set. But it doesn't seem to adminstratively block it, it allows them to still "conf" for instance.
Then it works as expected, it allows the commands that are permitted and denying all unspecified commands.I know I am in the right command set because the changes I make are reflected immediately.Can someone test the "Permit any command that is not in the table below' and tell me if it works? I can make it work with the unchecked box, sure, but it would be nice to get it to work.
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Apr 6, 2011
I have a handheld device that will be used for inventory outside of our office. It has 3g capabilities. Is there anyway I can permit traffic from this device from the outside world coming into my network? I need to open a couple of ports so it can hit the server. But I have no intention to open these ports up to the entire world. I use an ASA 5520 with a managed router from our provider. I looked around on the Cisco site and the only information I found was for permitting and denying traffic from devices that are within the network.
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Sep 4, 2011
Actually all service from site to site is permitted, without restriction.I want to insert an ASA to block some internet traffic on main site.I try to configure my ASA5510.No problem for outgoing connection or to permit a single service on main site.But impossible to give access to all service/connection from all remote site to main site. [code]
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Oct 25, 2012
We have a 5510 (8.2) with the following 4 interfaces (security-levels) inside (95), outside(0), dmz(25), and test (95). The dmz network is 10.10.10.0/24 and the outside interface is 40.133.84.69.We have run into a situation where a dmz hosted iRedMail server running postfix (10.10.10.51) is relaying mail which in some cases points back to us at 40.133.84.69 and into our Exchange server. In these cases in the dmz server's mail logs we see postfix timeout trying to connect to smtp at 40.133.84.69. When I try to telnet from 10.10.10.51 to the outside interface on port 25 it times out.We've tried different ways to allow the outside adapter to permit smtp (or any service!) from 10.10.10.51 but we're left scratching out heads.
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Feb 9, 2012
I have a rule which permits traffic to a web server and logging is enabled. But when I go to syslog I am only seeing traffic which has been denied. What needs to change to be able to see the logged traffic on permit rules?
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Jul 17, 2012
I have problems in my Cisco network until I connected some Moxa devices.This Moxa are models EDS-316 and EDS-208
My principal trouble is the traffic UDP. Suddently the network don't permit the traffic UDP in VLAN where are connected Moxa devices.
During an hour the Moxa can send TCP traffic, but can't send UDP. If a Moxa device is unplugged from network, all devices connected to him can work offile from principal network, but if I plugg again the Moxa is like disable.
After one hour (more or less) the system restart all functions and work fine.I catch the logs from TXerrorsInPorts and all the ports where is connected a Moxa have errors all time.
I don't know which is the problem, but I think that problem is in negotiation from Moxa to Cisco.This is the configuration from a port where is connected a Moxa: [code]
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Jul 20, 2011
We have SSL VPN using the AnyConnect client going to an ASA5540.
Is there a way to permit users to access their own LAN, but still force them to use the VPN tunnel for Internet access?
If I'm reading the documentation correctly, it seems that when you activate split tunnelling, it allow LAN access, but will also allow the user to access the Internet over the LAN instead of over the VPN.
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Jul 5, 2012
We have a firewall service environment where logging is handled with UDP at the moment. Recently we have noticed that some messages get lost on the way to the server (Since the server doesn't seem to be under huge stress from syslog traffic). We decided to try sending the syslog via TCP. You can imagine my surprise when I enabled the "logging host <interface name> <server ip> tcp/1470" on an ASA Security context and find out that all the connections through that firewall are now being blocked. Granted, I could have checked the command reference for this specific command but I never even thought of the possibility of a logging command being able to stop all traffic on a firewall.
The TCP syslog connection failing was caused by a mismatched TCP port on the server which got corrected quickly. Even though I could now view log messages from the firewall in question in real time, the only message logged was the blocking of new connections with the following syslog message: "%ASA-3-201008: Disallowing new connections."
Here start my questions:
- New connections are supposed to be blocked when the the TCP Syslog server are not reachable. How is it possible that I am seeing the TCP syslog sent to the server and the ASA Security Context is still blocking the traffic?
- I configured the "logging permit-host down" after I found the command and it supposedly should prevent the above problem/situation from happening. Yet after issuing this command on the Security Context in question, connections were still being blocked with the same syslog message. Why is this?
- Eventually I changed the logging back to UDP. This yet again caused no change to the situation. All the customer connections were still being blocked. Why is this?
- After all the above I removed all possible logging configurations from the Security Context. This had absolutely no effect on the situation either.
- As a last measure I changed to the system context of the ASA and totally removed the syslog interface from the Security Context. This also had absolutely no effect on the situation.
At the end I was forced to save the configuration on the ASAs Flash -memory, remove the Security Context, create the SC again, attach the interfaces again and load the configuration from the flash into the Security Context. This in the end corrected the problem. Seems to me this is some sort of bug since the syslog server was receiving the syslog messages from the SC but the ASA was still blocking all new connections. Even the command "logging permit-host down" command didn't wor or changing back to UDP.
It seems the Security Context in question just simply got stuck and continued blocking all connections even though in the end it didn't have ANY logging configurations on. Seems to me that this is quite a risky configuration if you are possibly facing cutting all traffic for hundreds of customers when the syslog connection is lost or the above situation happens and isn't corrected by any of the above measures we took (like the command "logging permit-host down" which is supposed to avoid this situation altogether).
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